New comet findings: Is this how life on Earth began?

In its most recent dispatch from the comet 67P—which it landed on last November after taking 10 years to make the 4-billion-mile trip to get there—the European Space Agency’s Philae lander has found compounds that are known to be the building blocks of life.

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This adds to a hunch that scientists have had for many decades that life on Earth may have been seeded by comets—those weird celestial bodies created at the very beginning of the solar system but then pushed out to its far outer reaches.

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